Bidirectional bending-adjusting guide wire control handle

Abstract

The invention belongs to the field of medical instruments, and particularly relates to a bidirectional bending-adjusting guide wire control handle which comprises a shell, a shaft sleeve, a front shaft, a rear shaft and a driving part. The shell is in a sleeve shape; a slot is formed in the side wall of the front section of the shell; a first guide part is arranged on the inner wall of the rear section of the shell; the shaft sleeve is in a sleeve shape, is arranged in the shell and can move back and forth in the axial direction relative to the shell. The inner wall of the shaft sleeve front section is provided with first internal threads, the outer wall of the shaft sleeve front section is provided with a shifting groove in the axial direction, and the inner wall of the shaft sleeve rear section is provided with second internal threads. A first external thread meshed with the first internal thread is arranged at the rear end of the front shaft; a second external thread meshed with the second internal thread is arranged at the front end of the rear shaft, and a second guide part corresponding to the first guide part is arranged on the side wall of the rear shaft; the driving piece comprises a roller and a deflector rod arranged on the end face of the roller. The guide wire can be bent bidirectionally with one hand, the operation is convenient, and an operator can judge the bending condition of the bending section of the guide wire conveniently; and large-distance relative movement can be completed through small-range driving.

Description

Technical Field

[0001] The invention belongs to the field of medical devices, and in particular relates to a bidirectional bending guidewire control handle. Background Art

[0002] Nerve guidewires are used to provide positioning and guidance for surgical instruments during various cardiovascular and cerebrovascular disease surgeries. In order to adapt to the complex vascular structure, bend guidewires are widely used.

[0003] When operating a commonly used bending guide wire, one hand pinches the sleeve at the tail end and the other hand pulls or pushes the core wire in the sleeve, so that the bending section of the bending guide wire can be bent left and right to achieve the purpose of bending. In order to facilitate the operation of this bending guide wire, there is a handle structure on the market, which can fix the sleeve at the tail end of the bending guide wire, but it is still necessary to pull or push the core wire by hand. Although this handle structure is slightly easier than pure manual operation, it is still difficult to operate in fact, and there is still a lot of room for improvement. Summary of the invention

[0004] The invention provides a bidirectional guidewire bending control handle, which can effectively solve the problems in the background technology.

[0005] The present invention provides a bidirectional bending guide wire control handle, comprising a housing, a shaft sleeve, a front shaft, a rear shaft and a driving member;

[0006] The shell is sleeve-shaped; a slot is provided on the side wall of the front section of the shell; and a first guide portion is provided on the inner wall of the rear section of the shell;

[0007] The shaft sleeve is in the shape of a sleeve, and is arranged in the housing and can move back and forth in the axial direction relative to the housing; the inner wall of the front section of the shaft sleeve is provided with a first internal thread, the outer wall of the front section of the shaft sleeve is provided with a shift groove along the axial direction, and the inner wall of the rear section of the shaft sleeve is provided with a second internal thread;

[0008] The front shaft is sleeved and fixed in the housing, the front shaft is hollow, the front end of the front shaft is fixed with a sleeve at the tail end of the bending guide wire, and the rear end of the front shaft is provided with a first external thread engaged with the first internal thread;

[0009] The rear shaft is sleeved in the housing, the rear shaft is hollow, the front end of the rear shaft is provided with a second external thread meshing with the second internal thread, and the side wall of the rear shaft is provided with a second guide portion corresponding to the first guide portion; the rear end of the rear shaft is fixed with a core wire at the tail end of the bending guide wire;

[0010] The driving member comprises a roller and a lever arranged on the end surface of the roller; the roller sleeve is arranged on the front shaft, and the rolling surface of the roller extends out from the slot hole; the lever is arranged in the slot.

[0011] As a further optimization of the present invention, the outer wall of the sleeve is provided with a first convex contact; the inner wall of the shell is provided with a second convex contact corresponding to the first convex contact; when the sleeve moves back and forth axially relative to the shell, the first convex contact and the second convex contact rub against each other back and forth.

[0012] As a further optimization of the present invention, the second convex contact is annular and has one or more circles.

[0013] As a further optimization of the present invention, the first convex contact is annular.

[0014] As a further optimization of the present invention, the shell includes an upper shell and a lower shell; the upper shell and the lower shell are symmetrical structures and are mutually clamped to form a sleeve shape.

[0015] As a further optimization of the present invention, the slide groove is provided with a limiting portion.

[0016] As a further optimization of the present invention, a first fixing portion is provided on the side wall of the front axle; and a second fixing portion corresponding to the first fixing portion is provided on the inner wall of the shell.

[0017] As a further optimization of the present invention, it also includes a chuck; the chuck includes a core and a jacket; the core is sleeve-shaped, one end of the core is a fixed end, and the side wall of the other end of the core is provided with a plurality of slots; the jacket is sleeve-shaped, one end of the jacket is a threaded end, and the inner wall of the other end of the jacket is provided with a shrinkage and is sleeved on the other end of the core;

[0018] The chucks are provided with two front and rear ones; one end of the core of the front chuck is fixed to the front end of the front shaft, and one end of the sleeve of the front chuck is engaged with the thread of the front end of the front shaft; one end of the core of the rear chuck is arranged at the rear end of the rear shaft, and one end of the sleeve of the rear chuck is engaged with the thread of the rear end of the rear shaft.

[0019] As a further optimization of the present invention, the side wall of the sleeve is provided with a mark; the side wall of the shell is provided with a window corresponding to the mark.

[0020] As a further optimization of the present invention, a scale is provided on the rolling surface of the roller.

[0021] The present invention provides a bidirectional guide wire bending control handle, which can be used to bidirectionally bend the guide wire with one hand, and is easy to operate; the relative movement of the front axis and the rear axis can also be seen and felt intuitively, so that the operator can judge the bending condition of the guide wire bending section; and a small range of driving can be achieved to complete a large distance of relative movement.

[0022] Instruction Manual

[0023] Figure 1 Schematic diagram of the appearance of this embodiment;

[0024] Figure 2 yes Figure 1 Cutaway diagram;

[0025] Figure 3yes Figure 1 Schematic diagram of the middle shell structure;

[0026] Figure 4 yes Figure 3 Half-section diagram;

[0027] Figure 5 yes Figure 1 Schematic diagram of the middle shaft sleeve structure;

[0028] Figure 6 yes Figure 5 Half-section diagram;

[0029] Figure 7 It is a schematic diagram of the driving component structure;

[0030] Among them, the shell 1, the slot 1a, the slide groove 1b, the limit part 1c, the window 1d, the second convex contact 1e, the sleeve 2, the first internal thread 2a, the second internal thread 2b, the shift groove 2c, the first convex contact 2d, the front shaft 3, the first external thread 3a, the rear shaft 4, the second external thread 4b, the slider 4a, the driving member 5, the roller 5a, the shift rod 5b, the chuck 6, the core 6a, and the sleeve 6b. DETAILED DESCRIPTION

[0031] like Figure 1-2 As shown, this embodiment includes a housing 1, a bushing 2, a front axle 3, a rear axle 4 and a driving member 5.

[0032] The housing 1 is sleeve-shaped, and a slot 1a is provided on the side wall of the front section of the housing 1. The slot 1a is used to install the driving member 5. In this embodiment, the slot 1a is a through hole that penetrates two opposite side walls of the housing 1, that is, the operator can operate the driving member 5 from both the front and back sides. In other embodiments, the slot 1a can be set as a hole that only penetrates one side wall of the housing 1, that is, the operator only operates the driving member 5 from the front.

[0033] A slide groove 1b is axially provided on the inner wall of the rear section of the shell 1 as a first guide portion, and the slide groove 1b is used to limit the moving direction of the rear axle 4. In this embodiment, a limiting portion 1c is provided at the end of the slide groove 1b, and the limiting portion 1c is used to limit the movement of the rear axle 4.

[0034] The shaft sleeve 2 is also sleeve-shaped. The shaft sleeve 2 is arranged in the housing 1 and can move back and forth in the axial direction relative to the housing 1. After the shaft sleeve 2 is installed in the housing 1, the center line of the shaft sleeve 2 coincides with the center line of the housing 1. The inner wall of the front section of the shaft sleeve 2 is provided with a first internal thread 2a, and the inner wall of the rear section of the shaft sleeve 2 is provided with a second internal thread 2b. The outer wall of the front section of the shaft sleeve 2 is provided with a shifting groove 2c along the axial direction.

[0035] The front shaft 3 is fixed in the housing 1. The front shaft 3 is hollow. The front end of the front shaft 3 is used to fix the sleeve at the tail end of the bending guide wire. The rear end of the front shaft 3 is provided with a first external thread 3a that meshes with the first internal thread 2a. After assembly, the first internal thread 2a meshes with the first external thread 3a, and the center line of the front shaft 3 coincides with the center line of the sleeve 2.

[0036] The rear axle 4 sleeve 2 is arranged in the shell body 1, and the rear axle 4 is also hollow. The front end of the rear axle 4 is provided with a second external thread 4b meshing with the second internal thread 2b, and the side wall of the rear axle 4 is provided with a slider 4a corresponding to the slide groove 1b as a second guide portion. In other embodiments, a slider can also be provided on the inner wall of the rear section of the shell body 1 as the first guide portion, and a slide groove can be provided on the side wall of the rear axle 4 as the second guide portion to realize the guiding function of the relative sliding of the two.

[0037] In this embodiment, the core wire of the tail end of the bending guide wire is fixed at the rear end of the rear shaft 4. After assembly, the second internal thread 2b is meshed with the second external thread 4b, the center line of the rear shaft 4 coincides with the center line of the sleeve 2, and the slider 4a is just stuck in the slide groove 1b.

[0038] The driving member 5 includes a roller 5a and a lever 5b disposed on the end surface of the roller 5a. The roller 5a is disposed at the slot 1a of the housing 1, and the rolling surface of the roller 5a extends out of the slot 1a. The roller 5a is provided with a hollow hole to be sleeved on the front axle 3. After installation, the lever 5b is disposed in the lever slot 2c.

[0039] When in use, the operator holds the housing 1 with one hand and uses the thumb to rotate the roller 5a clockwise or counterclockwise. The lever 5b on the roller 5a can drive the sleeve 2 to rotate. Since the first external thread 3a is meshed with the first internal thread 2a, the sleeve 2 will move back and forth in the axial direction while rotating. Since the second external thread 4b is meshed with the second internal thread 2b, the slider 4a is arranged in the slide groove 1b, so that the rotation and movement of the sleeve 2 can push the rear axle 4 to move back and forth in the axial direction. Finally, the relative movement of the front axle 3 and the rear axle 4 in the axial direction is achieved. It should be noted that the sleeve 2 in this embodiment moves in two directions, one is rotation around the axis centerline, and the other is movement in the axial direction. This movement mode of the sleeve 2 has at least the following three beneficial effects:

[0040] Firstly, it is easier to push the rear axle 4 to move in the axial direction, which can effectively reduce the resistance of the rear axle 4 to move back and forth in the axial direction and reduce the occurrence of jamming;

[0041] Secondly, the two motion modes of the sleeve 2 both propel the rear axle 4 to move in the axial direction. The two propulsion modes can propel the rear axle 4 to a greater distance after being superimposed, so that the rear axle 4 moves more, and the roller 5a can propel the rear axle 4 to a greater distance by rotating in a small range.

[0042] Thirdly, the movement of the sleeve 2 in the axial direction in the housing 1 can provide a structural basis for at least two preferred structures, as follows:

[0043] The first preferred structure is that the outer wall of the sleeve 2 is provided with a first convex contact 2d, and the inner wall of the housing 1 is provided with a second convex contact 1e corresponding to the first convex contact 2d. When the sleeve 2 moves back and forth relative to the housing 1 in the axial direction, the first convex contact 2d and the second convex contact 1e rub back and forth. Specifically, the second convex contact 1e is annular and has a plurality of circles, and the first convex contact 2d is also annular. Under this preferred structure, when the operator rotates the roller 5a, the operator can intuitively judge whether the front shaft 3 and the rear shaft 4 have moved relative to each other through the squeezing feeling of the back and forth friction between the first convex contact 2d and the second convex contact 1e, and even judge the relative movement distance of the front shaft 3 and the rear shaft 4, so as to judge the bending condition of the guide wire bending section. Of course, in other embodiments, the second convex contact 1e can also be provided with only one circle, or the first convex contact 2d and the second convex contact 1e are not provided in annular shape, but are provided in a point shape or a plurality of arranged points.

[0044] The second preferred structure is that a mark can be set on the side wall of the sleeve 2, and a window 1d corresponding to the mark is set on the side wall of the housing 1. In this preferred structure, the position change of the mark can be visually observed through the window 1d to determine whether the front axle 3 and the rear axle 4 have moved relative to each other and the distance of the relative movement.

[0045] Furthermore, a scale may be provided on the rolling surface of the roller 5a, and by observing the reduction of the scale offset center position after the roller 5a rotates, it can be determined whether the front axle 3 and the rear axle 4 have moved relative to each other and the distance of the relative movement.

[0046] Furthermore, in order to facilitate manufacturing and installation, the present embodiment separates the housing 1 into an upper housing and a lower housing. The upper housing and the lower housing are symmetrical structures and are mutually engaged to form a sleeve shape. Specifically, a mounting column can be provided on the upper housing 1, and a mounting groove can be provided on the lower housing 1. The mounting column is clamped in the mounting groove to achieve clamping, and the mounting column and the mounting groove are provided on the mounting surfaces of the upper housing and the lower housing.

[0047] This embodiment also provides a structure for fixing the front axle 3 on the housing 1, that is, a clamping protrusion is provided on the side wall of the front axle 3 as a first fixing part, and a clamping groove corresponding to the clamping protrusion is provided on the inner wall of the housing 1 as a second fixing part, and the clamping groove is clamped on the clamping protrusion, which can not only play the role of installation and positioning, but also prevent the front axle 3 from rotating under the drive of the roller 5a. In other implementations, a clamping groove can be provided on the side wall of the front axle 3 as the first fixing part, and a clamping protrusion can be provided inside the housing as the second fixing part.

[0048] Furthermore, in this embodiment, the front end of the front shaft 3 does not directly fix the sleeve at the tail end of the bending guide wire, and the rear end of the rear shaft 4 does not directly fix the core wire at the tail end of the bending guide wire, but a chuck 6 is used.

[0049] The chuck 6 comprises a core 6a and a jacket 6b. The core 6a is sleeve-shaped, one end of the core 6a is a fixed end, and the other end of the core 6a has a plurality of slots on its side wall; the jacket 6b is sleeve-shaped, one end of the jacket 6b is a threaded end, and the other end of the jacket 6b has a constricted opening on its inner wall and is sleeved on the other end of the core 6a.

[0050] The chuck 6 is provided with two parts, front and rear. One end of the core 6a of the front chuck 6 is inserted into and fixed at the front end of the front shaft 3, and one end of the jacket 6b of the front chuck 6 is threadedly engaged with the front end of the front shaft 3. One end of the core 6a of the rear chuck 6 is inserted into and fixed at the rear end of the rear shaft 4, and one end of the jacket 6b of the rear chuck 6 is threadedly engaged with the rear end of the rear shaft 4.

[0051] When in use, the jacket 6b is tightened, and the shrinkage in the jacket 6b squeezes the slot, causing the slot to shrink, thereby achieving the purpose of clamping.

[0052] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the present invention, rather than to limit the scope of protection of the present invention. Although the present invention has been described in detail with reference to the preferred embodiments, those skilled in the art should understand that the technical solution of the present invention can be modified or replaced by equivalents without departing from the essence and scope of the technical solution of the present invention.

Claims

1. A bidirectional guidewire bending control handle, characterized in that: It includes a housing, a bushing, a front axle, a rear axle and a driving member; The shell is sleeve-shaped; a slot is provided on the side wall of the front section of the shell; and a first guide portion is provided on the inner wall of the rear section of the shell; The shaft sleeve is in the shape of a sleeve, and is arranged in the housing and can move back and forth in the axial direction relative to the housing; the inner wall of the front section of the shaft sleeve is provided with a first internal thread, the outer wall of the front section of the shaft sleeve is provided with a shift groove along the axial direction, and the inner wall of the rear section of the shaft sleeve is provided with a second internal thread; The front shaft is sleeved and fixed in the housing, the front shaft is hollow, the front end of the front shaft is fixed with a sleeve at the tail end of the bending guide wire, and the rear end of the front shaft is provided with a first external thread engaged with the first internal thread; The rear shaft is sleeved in the housing, the rear shaft is hollow, the front end of the rear shaft is provided with a second external thread meshing with the second internal thread, and the side wall of the rear shaft is provided with a second guide portion corresponding to the first guide portion; the rear end of the rear shaft is fixed with a core wire at the tail end of the bending guide wire; The driving member comprises a roller and a lever arranged on the end surface of the roller; the roller sleeve is arranged on the front shaft, and the rolling surface of the roller extends out from the slot hole; the lever is arranged in the slot.

2. A bidirectional guidewire bending control handle according to claim 1, characterized in that: The outer wall of the shaft sleeve is provided with a first convex contact; the inner wall of the shell is provided with a second convex contact corresponding to the first convex contact; when the shaft sleeve moves back and forth axially relative to the shell, the first convex contact and the second convex contact rub back and forth.

3. A bidirectional guidewire bending control handle according to claim 2, characterized in that: The second convex contact is annular and has one or more circles.

4. A bidirectional guidewire bending control handle according to claim 2, characterized in that: The first convex contact is annular.

5. A bidirectional guidewire bending control handle according to claim 1, characterized in that: The shell comprises an upper shell and a lower shell; the upper shell and the lower shell are symmetrical structures and are mutually clamped to form a sleeve shape.

6. A bidirectional guidewire bending control handle according to claim 1, characterized in that: The slide is provided with a limiting portion.

7. A bidirectional guidewire bending control handle according to claim 1, characterized in that: A first fixing portion is provided on the side wall of the front axle; and a second fixing portion corresponding to the first fixing portion is provided on the inner wall of the shell.

8. The bidirectional guidewire bending control handle according to claim 1, characterized in that: It also includes a chuck; the chuck includes a core and a jacket; the core is sleeve-shaped, one end of the core is a fixed end, and the side wall of the other end of the core is provided with a plurality of slots; the jacket is sleeve-shaped, one end of the jacket is a threaded end, and the inner wall of the other end of the jacket is provided with a shrinkage and is sleeved on the other end of the core; The chucks are provided with two front and rear ones; one end of the core of the front chuck is fixed to the front end of the front shaft, and one end of the sleeve of the front chuck is engaged with the thread of the front end of the front shaft; one end of the core of the rear chuck is arranged at the rear end of the rear shaft, and one end of the sleeve of the rear chuck is engaged with the thread of the rear end of the rear shaft.

9. A bidirectional guidewire bending control handle according to claim 1, characterized in that: The side wall of the shaft sleeve is provided with a mark; the side wall of the shell body is provided with a window corresponding to the mark.

10. A bidirectional guidewire bending control handle according to claim 1, characterized in that: The rolling surface of the roller is provided with a scale.

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